Improvement in turning and boring mechanisms



0. VAN HAA GEN. Boring and Turning Metal.

Patented Oct?. `1l

N-PTERS, PHnTmuTMoGRAPHER. WASHINGTON. D C.

'tniird ,Quatre jgatwtctjijiirr;

CLAUS VAN HAAGEN, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO HIMSELF AND ANTHQNY VAN HAAGEN, 0F SAME PLAGE.

Letters Patent No. 108,306, aan october 11, 1870.

IMPRCVEMENT IN TURNING AND BO'RlNG MECHANISMS.

The Schedule referred to in these Letters Patent and making paxtof thesame.

I, CLAUS VAN HAAGEN, of Philadelphia, county of Philadelphia, State of Pennsylvania, have invented certain Improved Turning and Boring Mechanism,- of which the following is a specification.

My invention consists of mechanism, toov fully cle-:

scribed hereafter to need preliminary explanation, for boring and turning metalsLt-he objects of' my invcnf tion being the ready adjnstabilityof the cutting-tool to bore holes and turn objects of dii'erent sizes, genera-l simplicity as regards construction, facility in detaching and readjusting the several parts, and ready means of securing and adjusting the cutting-tool. Description of the Accompanying Drawing. Figure 1 is a side view, representing my improved turning and boring mechanism; Figures 2 and 3 sectional views ofthe turning or boring-tool; and Y Figures'd and 5 views representing modifications of the tool; I

General Description.

The dotted vline -A represents the face-plate of a turning-lathe, and

B, t-he object to be bored, the said object being secured to the face-.plate by any suitable appliances.

I) represents, in the present instance, a spindle, which can be fed forward, but cannotrevolve, such, for instance, as the spindle of the backA head-stock of a lathe, and the tool, which I will now proceed to dcscribe, is secured tothe said spindle D.

The tool consists of a hub, E, provided with a screw, e, or having some other suitable provision for the ready and secure attachment ofthe hub to and its detachment from the spindle D.v f

This hub has a transverse slot, a, between which is fitted the inner end of an arm, G, and through the latter, as well as through the hub, passes apin, the latter having at one end ahead, d', sunk into the hub on one side of its slot, and at the opposite end a screw, adapted to a threaded hole in the hnb,`at the opposite side ofthe slot, so that, on tightening the pin, whiclr,' in-the present instance, may hc accomplished by a square instrument, adapted to a square hole in the head, it will have a tendency to draw the two halves of the hub toward each other, and, as these possess a slight elasticity, to rmly grip the arm G.

It should bc understood, however, that this armis 1 very accurately itted to the slot ofthe hub,`a nd does not rely' for retention in its position on the grip 1t receives from the action of the screwpin, the latter merely serving as a medium` for tightening a joint already tted accurately.

vA screw or worm, H, ts snugly, but so as to turn freely in the end of the slot of the hub E, andes prevented from moving longitudinally therein by a pr.0- jeciion, m, on the end ofthe slot, fitting accuratelyin a groove, n, in the worm, the thread of which is 4adapted to the teeth of a segment, p, of a worm-wheel formed on, the arm G, andarranged concentrically with the pin l,on which the arm turns, so that, on turn- .ing the worm, which, in the present instance, may be done by a square tool, adapted to a square hole in the whilethe spindle D, and, consequently, the cutter', is

fed forward, as described.

Y After one cutv has been'completed, the spindle D is drawn back with itsI arm, and the latter so adjusted, by turning the wormH, that the cutter will project further from the center y y of the rotation of the object, preparatory to making a second cut.

I have described the object as rotating,-while the cutter can have no other movement than that of a longitudinal feed, but it will be evident that the spintransversely between the segment p on the arm G and A the bottom or end of theslot in Ithe hub E, while longitudinally it is' retained hy the simple projection m, at the end of the slot. l The-se I consider important features of my invention, as they permit the ready fitting together of the parts and the' ready detachment of the same from the hub; for instance, after withdrawing the pin d, the armG can at once be withdrawn iom the hub, and V the worm'H will be at libert-y.

Another important feature of my invention is the manner of securing the'cntting-'to'ol to the end of the arm, as shown in iigs. 4 and 5. In the present in stance, the cutter is of triangular sectional form. and its angular edge lits into an angular recess, t, in the end ofthe arm, and against a flat side of the cutter bears a wedge, w, fitted snugly, but so as to slide freely in the arm, and acted on b y the head of a setscrew, h.

While the thread of this screw engages in a corresponding thread in the arm, they have no control over the wedge; on tightening the screw therefor, the wedge will be forced against the cutter g, and will lirmly secure the same in the position to which it may have been adjusted, all of which will be clearly understood by reference to fig. 4.

One of the important advantages 'of my invention is this, that the arm G may be so arranged that, afterserving to out the 'sides of a hole in an object it may be adjnsted to turn the metal surrounding the hole', without removing the object from the face-plate; for instance, the tool may be used for boring the eye of a pulley, and then for turning the hub, :md this without any other adjustment than that accomplished by turning the Worm H. In such a case, the exact eoncentrioity of v the exterior of the hub of the pulley with the eye is insured, W er If desired, the object to be turned or bored may be secured to an entirely fixed plate, and the revolvingspindle I) to a slide, whi'eh can be moved in two directions, like the slides of e slide-rest.

C' lai-m.

The arm G, nud its toothed segmentp, the pin ll, :unl worm H, alleombined and adapted to the slotted hub E, substantially as set forth.

In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses.

Witnesess: CLAUSVAN HAAGEN.

JNO. B. HARDING, FRANK B. RICHARDS. 

